THE family of Joanne Lees, whose boyfriend is missing after an ambush in the Australian Outback, say she is still traumatised by her ordeal.

Her family spoke out after Joanne, 27, suggested that a man filmed by a security camera at a service station had probably shot her boyfriend, Peter Falconio, from Hepworth.

Joanne - who escaped from the attacker - held a Press conference with Peter's brother, to appeal for the public to help police find the missing 28-year-old and to catch the man who shot him.

Paul Falconio, 31, said there was a "very good possibility" that the man pictured at Alice Springs service station was the gunman.

Joanne, who sat beside Paul without addressing journalists during the conference, whispered "OK" at his assessment.

She had earlier told Northern Territory police that she could not positively identify the man pictured as her attacker.

Her stepfather, Vincent James, 58, of Almondbury, said: "She has good days and bad days - and the last couple of days have been quite bad.

"I would rather not talk about whether she did or did not recognise the man in the film. But she is bearing up as well as can be expected."

The Alice Springs film was taken early on July 15. It shows a man fitting the description of the attacker buying diesel fuel, ice and water. His pick-up truck is also shown.